AM62A7-Q1: How to check MIPI D-PHY Skew calibration result?

Hello Yuwei

Thank you for the query.

Let me review the query and comeback.

Regards,

Sreenivasa

Hello Yuwei

Not sure if you have looked at these registers.

14.9.6.2 DPHY_RX Registers
Table 14-24055. DPHY_RX0_VBUS2APB_WRAP_VBUSP_K3_DPHY_RX,
DPHY_RX0_VBUS2APB_WRAP_VBUSP_K3_DPHY_RX Registers, Base Address=3011 0000H,

Please review as i check internally with the expert.

Regards,

Sreenivasa

Hello Yuwei

I am assigning to the expert to support further.

Regards,

Sreenivasa

Hi Yuwei,

Can you advise what bits 1:0 of 0x301102B8 address read?

Best regards,

Luis Parga

Hi Luis,

The value I read at address  0x301102B8 is: 0x00010020.

Does this mean that the deskew mode was not entered correctly?

root@am62axx-evm:/opt/edgeai-gst-apps# devmem2 0x301102b8
/dev/mem opened.
Memory mapped at address 0xffff9bd6f000.
Read at address  0x301102B8 (0xffff9bd6f2b8): 0x00010020
root@am62axx-evm:/opt/edgeai-gst-apps# devmem2 0x301102b8
/dev/mem opened.
Memory mapped at address 0xffffa6908000.
Read at address  0x301102B8 (0xffffa69082b8): 0x00010020
root@am62axx-evm:/opt/edgeai-gst-apps# devmem2 0x301102b8
/dev/mem opened.
Memory mapped at address 0xffff9a176000.
Read at address  0x301102B8 (0xffff9a1762b8): 0x00010020
root@am62axx-evm:/opt/edgeai-gst-apps# devmem2 0x301102b8
/dev/mem opened.
Memory mapped at address 0xffffac590000.
Read at address  0x301102B8 (0xffffac5902b8): 0x00010020
root@am62axx-evm:/opt/edgeai-gst-apps# devmem2 0x301102b8
/dev/mem opened.
Memory mapped at address 0xffff8051d000.
Read at address  0x301102B8 (0xffff8051d2b8): 0x00010020
root@am62axx-evm:/opt/edgeai-gst-apps# devmem2 0x301102b8
/dev/mem opened.
Memory mapped at address 0xffff8b712000.
Read at address  0x301102B8 (0xffff8b7122b8): 0x00010020
root@am62axx-evm:/opt/edgeai-gst-apps# devmem2 0x301102b8
/dev/mem opened.
Memory mapped at address 0xffff8227d000.
Read at address  0x301102B8 (0xffff8227d2b8): 0x00010020
root@am62axx-evm:/opt/edgeai-gst-apps# devmem2 0x301102b8
/dev/mem opened.
Memory mapped at address 0xffffb8f33000.
Read at address  0x301102B8 (0xffffb8f332b8): 0x00010020

Sometimes my camera displays a scrambled screen, and ECC error detection fails.

What suggestions do you have for solving this problem?

Thanks,

Yuwei

Thanks Yuwei,

It is possible deskew mode has not been entered correctly. Can you advise what the registers suggested by Sreenivasa read also? Is your camera sensor sending the initial deskew calibration sequence? Do the deskew calibration requirements of the TX side meet the minimum requirements of the RX side? Is it possible that the scrambled screen on the camera means a periodic deskew pattern also needs to be sent?

Best regards,

Luis Parga

Hello Yuwei

Thank you for the note. Appreciated.

Are you able to add a couple of sentences on the resolution that can help wider E2E users

Regards,

Sreenivasa